In the regiment of H.264 decoders with DXVA support arrived. Starting from version 7, Divx contains the H.264 decoder and a new
modification with support for DXVA has appeared. Thus, 4 DXVA H.264 codecs can be distinguished:
- PowerDVD H.264
- Media Player Classic Home Cinema H.264 (based on ffdshow)
- Microsoft DTV-DVD H.264 (from Windows 7)
- Divx H.264
Recently, I conducted testing of H.264 decoders (the
beginning and
end of the test, then without Divx participation) on streams from satellite HD channels. Such data are perhaps the most difficult to decode. There is a broken stream and the need for fast and high-quality deinterlacing. Testing showed a significant superiority of DXVA codecs in such tests for quality. The performance gap is huge, the CPU load on the Core2 Duo E8500 is measured by percentages, which is important because performance becomes a bottleneck even on powerful CPUs when deinterlacing is needed. Those. I want to say that for this kind of video DXVA codecs can be indispensable.
In addition to the DirectShow H.264 decoder, as in the previous version, there are MKV DirectShow Splitter and AAC DirectShow Filter. They added MKV Media Foundation Splitter (for Windows 7 only).
The Media Foundation pipeline was introduced in Windows Vista and is used, for example, in Windows Media Player and Windows Media Center, so the presence of such a splitter will probably help get MKV to understand these programs.
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PS You can activate all the specified DXVA codecs in
Media Player Classic Home Cinema through the mechanism for connecting external DirectShow filters. Microsoft H.264 is built into Windows 7, and PowerDVD and Divx need to be installed, then the codecs will be visible from MPC-HC.
Links
DivX Plus Codec Pack.
Play HD video. Specificity of television HD streams (TS).
Play HD television streams. WMP 12 and more tests. (Continued)